Physiological Laboratory Providers — NPI Directory

1,880 active Physiological Laboratory providers hold an NPI in the latest NPPES snapshot. Physiological Laboratory falls under the “Laboratories” taxonomy grouping and spans 1 NUCC taxonomy code. Browse by state, or look a provider up by name or NPI number.

Physiological Laboratory by state

Taxonomy codes for Physiological Laboratory

Frequently asked questions

How do I find a Physiological Laboratory provider's NPI number?
Search by name with the NPI search, or browse by state below. Every profile shows the provider's NPI, taxonomy code, practice address, and NPPES status.
What taxonomy codes does Physiological Laboratory use?
Physiological Laboratory covers 1 NUCC taxonomy code, including 293D00000X (Physiological Laboratory). Each code page explains when it applies.
How many Physiological Laboratory providers are there in the U.S.?
Our latest NPPES snapshot lists 1,880 active providers with Physiological Laboratory as their primary taxonomy.

Source: CMS NPPES (public data). Snapshot 2026-07-09.